com.espertech.esper.client.soda

Class PatternStream

java.lang.Object

com.espertech.esper.client.soda.Stream

com.espertech.esper.client.soda.ProjectedStream

com.espertech.esper.client.soda.PatternStream

All Implemented Interfaces:

Serializable

public class PatternStream
extends ProjectedStream

A stream of events that is generated by pattern matches.

Patterns matches are events that match pattern expressions. Pattern expressions are built using Patterns.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PatternStream() Ctor.
PatternStream(PatternExpr expression) Ctor.
PatternStream(PatternExpr expression, String optStreamName) Ctor.
PatternStream(PatternExpr expression, String optStreamName, AnnotationPart[] annotations) Ctor.

Method Summary

Modifier and Type	Method and Description
static PatternStream	create(PatternExpr expression) Creates a pattern stream from a pattern expression.
static PatternStream	create(PatternExpr expression, String optStreamName) Creates a named pattern stream from a pattern expression.
AnnotationPart[]	getAnnotations() Returns the pattern-level annotations, if any
PatternExpr	getExpression() Returns the pattern expression providing events to the stream.
void	setAnnotations(AnnotationPart[] annotations) Sets the pattern-level annotations, if any
void	setExpression(PatternExpr expression) Sets the pattern expression providing events to the stream.
void	toEPLProjectedStream(StringWriter writer, EPStatementFormatter formatter) Represent as textual.
void	toEPLProjectedStreamType(StringWriter writer) Represent type as textual non complete.

Methods inherited from class com.espertech.esper.client.soda.ProjectedStream

addView, addView, addView, addView, addView, getViews, isRetainIntersection, isRetainUnion, isUnidirectional, setRetainIntersection, setRetainUnion, setUnidirectional, setViews, toEPLStream, toEPLStreamOptions, toEPLStreamType, toEPLViews, unidirectional

Methods inherited from class com.espertech.esper.client.soda.Stream

getStreamName, setStreamName, toEPL

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PatternStream

public PatternStream()

Ctor.

PatternStream

public PatternStream(PatternExpr expression)

Ctor.

Parameters:

expression - pattern expression

PatternStream

public PatternStream(PatternExpr expression,
                     String optStreamName)

Ctor.

Parameters:

expression - pattern expression

optStreamName - is the pattern stream name (as-name)

PatternStream

public PatternStream(PatternExpr expression,
                     String optStreamName,
                     AnnotationPart[] annotations)

Ctor.

Parameters:

expression - pattern expression

optStreamName - is the pattern stream name (as-name)

annotations - annotations on pattern-level, if any

Method Detail

create

public static PatternStream create(PatternExpr expression)

Creates a pattern stream from a pattern expression.

Parameters:

expression - pattern expression

Returns:

stream

create

public static PatternStream create(PatternExpr expression,
                                   String optStreamName)

Creates a named pattern stream from a pattern expression.

Parameters:

expression - pattern expression

optStreamName - is the pattern stream name (as-name)

Returns:

stream

getExpression

public PatternExpr getExpression()

Returns the pattern expression providing events to the stream.

Returns:

pattern expression

setExpression

public void setExpression(PatternExpr expression)

Sets the pattern expression providing events to the stream.

Parameters:

expression - is the pattern expression

getAnnotations

public AnnotationPart[] getAnnotations()

Returns the pattern-level annotations, if any

Returns:

pattern-level annotations

setAnnotations

public void setAnnotations(AnnotationPart[] annotations)

Sets the pattern-level annotations, if any

Parameters:

annotations - pattern-level annotations

toEPLProjectedStream

public void toEPLProjectedStream(StringWriter writer,
                                 EPStatementFormatter formatter)

Description copied from class: ProjectedStream

Represent as textual.

Specified by:

toEPLProjectedStream in class ProjectedStream

Parameters:

writer - to output to

formatter - for newline-whitespace formatting

toEPLProjectedStreamType

public void toEPLProjectedStreamType(StringWriter writer)

Description copied from class: ProjectedStream

Represent type as textual non complete.

Specified by:

toEPLProjectedStreamType in class ProjectedStream

Parameters:

writer - to output to